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Support external name service on global default backend

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This commit is contained in:
Andy Kipp
2019-03-27 13:48:04 -03:00
committed by Traefiker Bot
parent e32c021f16
commit 57ae9a80d5
2 changed files with 103 additions and 27 deletions
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77
provider/kubernetes/kubernetes.go
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@@ -503,39 +503,62 @@ func (p *Provider) addGlobalBackend(cl Client, i *extensionsv1beta1.Ingress, tem
templateObjects.Backends[defaultBackendName].ResponseForwarding = getResponseForwarding(service)
for _, port := range service.Spec.Ports {
endpoints, exists, err := cl.GetEndpoints(service.Namespace, service.Name)
if err != nil {
return fmt.Errorf("error retrieving endpoint information from k8s API %s/%s: %v", service.Namespace, service.Name, err)
}
if !exists {
return fmt.Errorf("endpoints not found for %s/%s", service.Namespace, service.Name)
}
if len(endpoints.Subsets) == 0 {
return fmt.Errorf("endpoints not available for %s/%s", service.Namespace, service.Name)
}
for _, subset := range endpoints.Subsets {
endpointPort := endpointPortNumber(port, subset.Ports)
if endpointPort == 0 {
// endpoint port does not match service.
continue
}
// We have to treat external-name service differently here b/c it doesn't have any endpoints
if service.Spec.Type == corev1.ServiceTypeExternalName {
protocol := "http"
for _, address := range subset.Addresses {
if endpointPort == 443 || strings.HasPrefix(i.Spec.Backend.ServicePort.String(), "https") {
protocol = "https"
if port.Port == 443 || strings.HasPrefix(port.Name, "https") {
protocol = "https"
}
url := protocol + "://" + service.Spec.ExternalName
if port.Port != 443 && port.Port != 80 {
url = fmt.Sprintf("%s:%d", url, port.Port)
}
templateObjects.Backends[defaultBackendName].Servers[url] = types.Server{
URL: url,
Weight: label.DefaultWeight,
}
} else {
endpoints, exists, err := cl.GetEndpoints(service.Namespace, service.Name)
if err != nil {
return fmt.Errorf("error retrieving endpoint information from k8s API %s/%s: %v", service.Namespace, service.Name, err)
}
if !exists {
return fmt.Errorf("endpoints not found for %s/%s", service.Namespace, service.Name)
}
if len(endpoints.Subsets) == 0 {
return fmt.Errorf("endpoints not available for %s/%s", service.Namespace, service.Name)
}
for _, subset := range endpoints.Subsets {
endpointPort := endpointPortNumber(port, subset.Ports)
if endpointPort == 0 {
// endpoint port does not match service.
continue
}
url := fmt.Sprintf("%s://%s", protocol, net.JoinHostPort(address.IP, strconv.FormatInt(int64(endpointPort), 10)))
name := url
if address.TargetRef != nil && address.TargetRef.Name != "" {
name = address.TargetRef.Name
}
protocol := "http"
for _, address := range subset.Addresses {
if endpointPort == 443 || strings.HasPrefix(i.Spec.Backend.ServicePort.String(), "https") {
protocol = "https"
}
templateObjects.Backends[defaultBackendName].Servers[name] = types.Server{
URL: url,
Weight: label.DefaultWeight,
url := fmt.Sprintf("%s://%s", protocol, net.JoinHostPort(address.IP, strconv.FormatInt(int64(endpointPort), 10)))
name := url
if address.TargetRef != nil && address.TargetRef.Name != "" {
name = address.TargetRef.Name
}
templateObjects.Backends[defaultBackendName].Servers[name] = types.Server{
URL: url,
Weight: label.DefaultWeight,
}
}
}
}